1320421044 has 12 divisors (see below), whose sum is σ = 3080982464. Its totient is φ = 440140344.

The previous prime is 1320421033. The next prime is 1320421057. The reversal of 1320421044 is 4401240231.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 1320421044.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55017532 + ... + 55017555.

Almost surely, 2^1320421044 is an apocalyptic number.

It is an amenable number.

1320421044 is an abundant number, since it is smaller than the sum of its proper divisors (1760561420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1320421044 is a wasteful number, since it uses less digits than its factorization.

1320421044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110035094 (or 110035092 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1320421044 is about 36337.5982145216. The cubic root of 1320421044 is about 1097.0779316680.

Adding to 1320421044 its reverse (4401240231), we get a palindrome (5721661275).

The spelling of 1320421044 in words is "one billion, three hundred twenty million, four hundred twenty-one thousand, forty-four".